Binocular loupe



Jan; 11, 19490 M, FROMMER 2,459,021

) BINOCULAR LOUPE Filed Nov. 10,, 1944 I 2 Sheets-Shet 1 M0555 flea/14445.2

M. FROMMER Jain. 11, 1949.

BINOCULAR LOUP E 2 Sheets-Sheet 2 Filed Nov. 10, 1944 Patented Jan. 11, 1949 1.;-:., 2.

UNITED v STATES PATENT OFFICE 2,459,021 f BINOQCULARVLOUPEI Moses Frommef', NewYork N: Application November 10,1944, SerialNo. 562,816

lengths of the loupe and its magnification powers.

.It is the object of the present invention to pro-" videa binocular loupe which is ruggedand sturdy in construction, but, nevertheless; light in weight, and which may be mounted upon conventional spectacle frames containing ophthalmic lenses 1 corresponding to the vision correction of the operator, if. such is necessary. This objective is attained by the balanced mounting of the magnifying loupe from the sides of the spectacle frame rather than from the mid-portion thereof at the nose bridge of the frame.

It is a further object of the invention to provide a loupe embodying a plurality of magnifying lenses each of which may be used alone to'obtain different magnifications at different focal lengths 2 0. or which may be combined to'obtain one or more lense systems producing different magnifications at one or more other focal lengths.

Itis a further object of the invention to provide a binocular loupe which is comfortable to gfi wear on account of its light weightand in which the magnifying lenses arecapable'of being swung conveniently from an" operative to an inoperative position andi'vice versa, without removal of the spectacle frame from the eyes of the operator 3 0 selectively to permit normal vision or magnified vision.

It is a further object of the invention to provide a binocular loupe which may be applied to existing spectacle frames or which may be built 1 economically in'the course ofconstruction ofsuch spectacle frames. While provision maybe made for the application of more, than one binocular loupe to the spectacle frame, a lesser number thanthose for which the frame is constructed.

maybe employed and difierent binocular loupes may be applied to the frame interchangeably, de-

pending upon a change in needs of the operator.

It is a further object of my invention toprovide a hinge mounting upon each side of the spectacle ,frame for the selective mounting of a monoloupe for either the right eye or left eye which may be used in conjunction with or to the exclusion of the binocular loupe in accordance with the present invention, and which, like thebinocular loupe, 0

is capable of rotational movement about a horizontal axis to bring themonoloupe within the range of .vision from a position above the eyes of the wearer.

It is a further object of the invention to provide manner known in, the trade.

1 Claim. (01. 89-41) tiv'e positioning of the magnifying lenses between operative and inoperative positions;

Fig. 3is an enlarged perspective View showing the hinge mountingson the spectacle frame for pivotally supporting the magnifying lens frame;

:Fig. 4 is a front elevation of one of the binocular loupes showing the mounting of the individual lenses therein; f

Fig. 5 is a horizontal sectional view along line 5 5 of Fig. 4;'

Fig; 6 is a vertical sectional view along line '6 '6"ofFig.4;and

. Fig."'7 is a perspective View of another embodiment of the invention consisting of a combination mono-lou e and binocular loupe either individually voperable or selectively combinative with of conventional construction, which, for the sake of illustration,has been shown as a frame formed of non-inflammable plastic, consisting of eye frames I and I bridged by the nose bridge 2 and provided with temples 3 and 3' pivoted to the eye frames I and I, respectively. The temples may be pivoted at the central or upper portions of the end pieces of the eye frames and in any other I v The eye frames I and I may containophthalmic lenses 5 and 6' if the normal vision of the operator requires correction: else these frames may be left :blank, or may contain plainglass lenses.

A plurality of hinges are aflixed to the forward part of each of the end pieces of the spectacle frame for the purpose of mounting the binocular loupes for rotation about substantially horizontal axes alon a coaxial line. In the illustrated embodimeht, two'sets of hinges are provided, an inwardly"disposed set 4 and 4 and an outwardly disposed set 5 and 5'. If more than two magnifying lens framesare to be provided, additional hinges may be mounted on the front of the frame. Bars I6 extend forwardly from the hinges 4 and li and support-a frame It for rotation about the h ont al axis of the hinges so that this frame may be disposedforwardly of the spectacle frame "lenses.

1 between the eyes of the wearer.

or upwardly thereof as shown in Fig. 2 in the inoperative position thereof. Likewise, bars I5 and I5 of slightly greater length than bars I4 and I4, respectively, support the frame I! at the free forward end thereof for selective operation either in front of or above the spectacle frame. Suitable lenses I8 and I8 are mounted in frame I6 and an additional set of lenses I9 and I9 are mounted .in frame I]. The..Jenses..are spaced apart a. predetermined distance'ibyz means described in greater detail below, which spacing is dependent upon the interpupillary distance be; 3 tween the eyes of the operator, which may be adjusted at the time of fitting of the magnifying lenses in the course of their initialvpreparation.

of the lenses individually itopi .obtainaansturdysan'd economical construction. In these figuresirame I1 is shown constructed of metal framing having a shallow channel 2i therein which is adapted to receive the beveled top-and-bottom and-temporal edge of each lens. The nasal edge of eachlens is confined by vertical wires'lfl and'Qll' cooperatingwith grooves in the respective edges-('J"r"--"the The spacing between these wires-extending between the topand bottom-of*the f--frame corresponds to the desired interpupil'lary distance As shown; the frame may be formed fromasingle piece of channeled material which may be maihtainedinihtegrated condition by means of internally threaded end protuberances 22 having g threadedbolt' tending therethro-ugh. Of course, the frame may be constructed in any other manner-known-tin the art. In one form of execution of the i nvention,

frame i? with the lenses I9 and I9"'therein may have a focal length of 13" with a-magnification The inner frame lt-withfthe lenses i8 and i8 therein may have a focallengthfofl'fi" with a magnification of 20:, resulting inasmaller field of vision than is obtainable'with lth'eflenses in the outer frame. When'bothirames are in operativeiposition, as'shownxin 1, a"5" "focal length is obtained with a'magnification ofi'3x,

- resultingin a still smaller field of view andprov.ducing even more detailed visibility.

' The binocularloupe frames are capable of convenient manipulation from operative. to, inoperative position from either the right or'le'ftlsideiof .theoperator to adjust the vision to any. ofthe three adjustments described above, ,orlinto'jtlie fully inoperative position Whemnormal, visioriis desired to be had. A larger number of combinations may be obtained bytheproirisionbfl'more .sets of magnifying lenses.

The mounting-oi one or more, of thelbinocular loupes at the sides of the spectacle frames. remote from the nasal bridge results ina sturdy'structure presenting many. advantages. over-f.the. .ari:

rangements known heretofore whereinsu'ch binocular loupes have beenmounted'from'thebridge of the spectacle frame. 1

.The dismounting of the frames fromthehinge assemblies is a simple matter'to obt'ain'different lens combinations. Of course, the lenses in 'the loupes are so mounted -that 3"StGI'BOSGOIPiC vision is attained, which may be conveniently .adjusted for focal length and magnifying powen'depending upon the specific ne time to time. a

Fig. 7 illustrates adifierent-embodiment of-the invention having a 'high degree 'offutility in--'cer tain specialized 'work as :inithe jewh'yTepa-iring 16 Figs. 4, 5, and 6 show in detail the mounting eds of the operator from "70 and watchmaking and repairing fields, or other fields wherein high magnifications are required. In this construction a monoloupe 25 mounted at the forward end of arm 24 is pivotally mounted 5 on hinge 4 for selective cooperation with the binocular loupe I1 with lenses I'B and I9 thereon. The circular lens 26 in the frame of the monoloupe 25 may have a x magnification for work ...reqi.1iring. closeaobservation. i-The frame 25 may 10? be swung upwardly iout i of iithe tfield-.;=of vision Without any trouble and is always at hand when- ;ever sight therethrough is desired. A similar monoloupe may be mounted for vision through the left eye if such is desired.

...Altho ug h..my invention has been illustrated as applied to a spectacle frame of plastic material, -.it=is alsoeapplieablelto frames made of metal or any. other suitable structural materials.

While I have described my invention as embodied in a specific form and as operating in a "specific manner for-"purposes -of illustration, it should be-understood'tliat I don'ot limit myiinvention thereto; since various modifications "will suggest themselves to" those -skille'd*-in" the "art "without departing from'-"the,-'spirit of my 'inven- Ltion,'the gscope on-which is "setd'orth "inithe annexed claim.

" I. claim: A binocular ioupe comprising a spectacle frame 30" formed of a pair "10f eye frames containing ophthalmic lenses, a nasal "bridge "extending therebetween and a temple pivotallymounte'd-on each end, piece "ofithe'g'eyeframe:remote from said] bridge; Ithef forward part of each="encl-= piece having a' pair of horizontally arid laterally-'- disposed. hinges thereon disposed coaxiallyorr aihorijzontal axis, 'a set-of barsp'pivotally mounted about 'said hc mizont'al axis on" theinWardly-hisposedhinges and supporting .a' frame betweenithe 40 free ends thereof for a pair "of magnifying lenses, asst of bars of slightly greater length'than said first mentioned. bars pivotallymounted"aboutsaid horizontalaxis 'on'the'outwardlydisposedhinges and supporting a second framebetweerr thefree ends thereof? for 'a second pair-ofmagnifying lenses, ofdifierent characteristics from said first set, said last-mentioned'frames each-beingcapable oi positioning separately and .togetherffor- .Wartily of theeye framesito obtain" three different magnifying effectsnor "above'ifthe' eyef frames" into selectivelyinoperative positions.

.MOSES FROMMER.

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